procsup.c File Reference

#include <ntoskrnl.h>
#include <debug.h>
#include <mm/ARM3/miarm.h>

Include dependency graph for procsup.c:

Go to the source code of this file.

Macros
#define	NDEBUG
#define	MODULE_INVOLVED_IN_ARM3

Functions
NTSTATUS NTAPI	MiCreatePebOrTeb (IN PEPROCESS Process, IN ULONG Size, OUT PULONG_PTR BaseAddress)
VOID NTAPI	MmDeleteTeb (IN PEPROCESS Process, IN PTEB Teb)
VOID NTAPI	MmDeleteKernelStack (IN PVOID StackBase, IN BOOLEAN GuiStack)
PVOID NTAPI	MmCreateKernelStack (IN BOOLEAN GuiStack, IN UCHAR Node)
NTSTATUS NTAPI	MmGrowKernelStackEx (IN PVOID StackPointer, IN ULONG GrowSize)
NTSTATUS NTAPI	MmGrowKernelStack (IN PVOID StackPointer)
NTSTATUS NTAPI	MmSetMemoryPriorityProcess (IN PEPROCESS Process, IN UCHAR MemoryPriority)
NTSTATUS NTAPI	MmCreatePeb (IN PEPROCESS Process, IN PINITIAL_PEB InitialPeb, OUT PPEB *BasePeb)
NTSTATUS NTAPI	MmCreateTeb (IN PEPROCESS Process, IN PCLIENT_ID ClientId, IN PINITIAL_TEB InitialTeb, OUT PTEB *BaseTeb)
NTSTATUS NTAPI	MmInitializeProcessAddressSpace (IN PEPROCESS Process, IN PEPROCESS ProcessClone OPTIONAL, IN PVOID Section OPTIONAL, IN OUT PULONG Flags, IN POBJECT_NAME_INFORMATION *AuditName OPTIONAL)
NTSTATUS NTAPI	MmInitializeHandBuiltProcess (IN PEPROCESS Process, IN PULONG_PTR DirectoryTableBase)
NTSTATUS NTAPI	MmInitializeHandBuiltProcess2 (IN PEPROCESS Process)
BOOLEAN NTAPI	MmCreateProcessAddressSpace (IN ULONG MinWs, IN PEPROCESS Process, OUT PULONG_PTR DirectoryTableBase)
VOID NTAPI	MmCleanProcessAddressSpace (IN PEPROCESS Process)
VOID NTAPI	MmDeleteProcessAddressSpace (IN PEPROCESS Process)
NTSTATUS NTAPI	NtAllocateUserPhysicalPages (IN HANDLE ProcessHandle, IN OUT PULONG_PTR NumberOfPages, IN OUT PULONG_PTR UserPfnArray)
NTSTATUS NTAPI	NtMapUserPhysicalPages (IN PVOID VirtualAddresses, IN ULONG_PTR NumberOfPages, IN OUT PULONG_PTR UserPfnArray)
NTSTATUS NTAPI	NtMapUserPhysicalPagesScatter (IN PVOID *VirtualAddresses, IN ULONG_PTR NumberOfPages, IN OUT PULONG_PTR UserPfnArray)
NTSTATUS NTAPI	NtFreeUserPhysicalPages (IN HANDLE ProcessHandle, IN OUT PULONG_PTR NumberOfPages, IN OUT PULONG_PTR UserPfnArray)

Variables
ULONG	MmProcessColorSeed = 0x12345678
ULONG	MmMaximumDeadKernelStacks = 5
SLIST_HEADER	MmDeadStackSListHead
ULONG	MmRotatingUniprocessorNumber = 0

Macro Definition Documentation

MODULE_INVOLVED_IN_ARM3

#define MODULE_INVOLVED_IN_ARM3

Definition at line 15 of file procsup.c.

NDEBUG

#define NDEBUG

Definition at line 12 of file procsup.c.

Function Documentation

MiCreatePebOrTeb()

NTSTATUS NTAPI MiCreatePebOrTeb	(	IN PEPROCESS	Process,
		IN ULONG	Size,
		OUT PULONG_PTR	BaseAddress
	)

Definition at line 29 of file procsup.c.

{
    PMMVAD_LONG Vad;
    NTSTATUS Status;
    ULONG_PTR HighestAddress, RandomBase;
    ULONG AlignedSize;
    LARGE_INTEGER CurrentTime;
 
    Status = PsChargeProcessNonPagedPoolQuota(Process, sizeof(MMVAD_LONG));
    if (!NT_SUCCESS(Status))
        return Status;
 
    /* Allocate a VAD */
    Vad = ExAllocatePoolWithTag(NonPagedPool, sizeof(MMVAD_LONG), 'ldaV');
    if (!Vad)
    {
        Status = STATUS_NO_MEMORY;
        goto FailPath;
    }
 
    /* Setup the primary flags with the size, and make it commited, private, RW */
    Vad->u.LongFlags = 0;
    Vad->u.VadFlags.CommitCharge = BYTES_TO_PAGES(Size);
    Vad->u.VadFlags.MemCommit = TRUE;
    Vad->u.VadFlags.PrivateMemory = TRUE;
    Vad->u.VadFlags.Protection = MM_READWRITE;
    Vad->u.VadFlags.NoChange = TRUE;
    Vad->u1.Parent = NULL;
 
    /* Setup the secondary flags to make it a secured, writable, long VAD */
    Vad->u2.LongFlags2 = 0;
    Vad->u2.VadFlags2.OneSecured = TRUE;
    Vad->u2.VadFlags2.LongVad = TRUE;
    Vad->u2.VadFlags2.ReadOnly = FALSE;
 
    Vad->ControlArea = NULL; // For Memory-Area hack
    Vad->FirstPrototypePte = NULL;
 
    /* Check if this is a PEB creation */
    ASSERT(sizeof(TEB) != sizeof(PEB));
    if (Size == sizeof(PEB))
    {
        /* Create a random value to select one page in a 64k region */
        KeQueryTickCount(&CurrentTime);
        CurrentTime.LowPart &= (_64K / PAGE_SIZE) - 1;
 
        /* Calculate a random base address */
        RandomBase = (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS + 1;
        RandomBase -= CurrentTime.LowPart << PAGE_SHIFT;
 
        /* Make sure the base address is not too high */
        AlignedSize = ROUND_TO_PAGES(Size);
        if ((RandomBase + AlignedSize) > (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS + 1)
        {
            RandomBase = (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS + 1 - AlignedSize;
        }
 
        /* Calculate the highest allowed address */
        HighestAddress = RandomBase + AlignedSize - 1;
    }
    else
    {
        HighestAddress = (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS;
    }
 
    *BaseAddress = 0;
    Status = MiInsertVadEx((PMMVAD)Vad,
                           BaseAddress,
                           Size,
                           HighestAddress,
                           PAGE_SIZE,
                           MEM_TOP_DOWN);
    if (!NT_SUCCESS(Status))
    {
        ExFreePoolWithTag(Vad, 'ldaV');
        Status = STATUS_NO_MEMORY;
        goto FailPath;
    }
 
 
    /* Success */
    return STATUS_SUCCESS;
 
FailPath:
    PsReturnProcessNonPagedPoolQuota(Process, sizeof(MMVAD_LONG));
 
    return Status;
}

Referenced by MmCreatePeb(), and MmCreateTeb().

MmCleanProcessAddressSpace()

VOID NTAPI MmCleanProcessAddressSpace

(

IN PEPROCESS

Process

)

Definition at line 1263 of file procsup.c.

{
    PMMVAD Vad;
    PMM_AVL_TABLE VadTree;
    PETHREAD Thread = PsGetCurrentThread();
 
    /* Remove from the session */
    MiSessionRemoveProcess();
 
    /* Abort early, when the address space wasn't fully initialized */
    if (Process->AddressSpaceInitialized < 2)
    {
        DPRINT1("Incomplete address space for Process %p. Might leak resources.\n",
                Process);
        return;
    }
 
    /* Lock the process address space from changes */
    MmLockAddressSpace(&Process->Vm);
    MiLockProcessWorkingSetUnsafe(Process, Thread);
 
    /* VM is deleted now */
    Process->VmDeleted = TRUE;
    MiUnlockProcessWorkingSetUnsafe(Process, Thread);
 
    /* Enumerate the VADs */
    VadTree = &Process->VadRoot;
    while (VadTree->NumberGenericTableElements)
    {
        /* Grab the current VAD */
        Vad = (PMMVAD)VadTree->BalancedRoot.RightChild;
 
        /* Check for old-style memory areas */
        if (Vad->u.VadFlags.Spare == 1)
        {
            /* Let RosMm handle this */
            MiRosCleanupMemoryArea(Process, Vad);
            continue;
        }
 
        /* Lock the working set */
        MiLockProcessWorkingSetUnsafe(Process, Thread);
 
        /* Remove this VAD from the tree */
        ASSERT(VadTree->NumberGenericTableElements >= 1);
        MiRemoveNode((PMMADDRESS_NODE)Vad, VadTree);
 
        /* Only regular VADs supported for now */
        ASSERT(Vad->u.VadFlags.VadType == VadNone);
 
        /* Check if this is a section VAD */
        if (!(Vad->u.VadFlags.PrivateMemory) && (Vad->ControlArea))
        {
            /* Remove the view */
            MiRemoveMappedView(Process, Vad);
        }
        else
        {
            /* Delete the addresses */
            MiDeleteVirtualAddresses(Vad->StartingVpn << PAGE_SHIFT,
                                     (Vad->EndingVpn << PAGE_SHIFT) | (PAGE_SIZE - 1),
                                     Vad);
 
            /* Release the working set */
            MiUnlockProcessWorkingSetUnsafe(Process, Thread);
        }
 
         /* Skip ARM3 fake VADs, they'll be freed by MmDeleteProcessAddresSpace */
        if (Vad->u.VadFlags.Spare == 1)
        {
            /* Set a flag so MmDeleteMemoryArea knows to free, but not to remove */
            Vad->u.VadFlags.Spare = 2;
            continue;
        }
 
        /* Free the VAD memory */
        ExFreePool(Vad);
 
        /* Return the quota the VAD used */
        PsReturnProcessNonPagedPoolQuota(Process, sizeof(MMVAD_LONG));
    }
 
    /* Lock the working set */
    MiLockProcessWorkingSetUnsafe(Process, Thread);
    ASSERT(Process->CloneRoot == NULL);
    ASSERT(Process->PhysicalVadRoot == NULL);
 
    /* Delete the shared user data section */
    MiDeleteVirtualAddresses(USER_SHARED_DATA, USER_SHARED_DATA, NULL);
 
    /* Release the working set */
    MiUnlockProcessWorkingSetUnsafe(Process, Thread);
 
    /* Release the address space */
    MmUnlockAddressSpace(&Process->Vm);
}

Referenced by PspExitProcess(), and PspExitThread().

MmCreateKernelStack()

PVOID NTAPI MmCreateKernelStack	(	IN BOOLEAN	GuiStack,
		IN UCHAR	Node
	)

Definition at line 276 of file procsup.c.

{
    PFN_COUNT StackPtes, StackPages;
    PMMPTE PointerPte, StackPte;
    PVOID BaseAddress;
    MMPTE TempPte, InvalidPte;
    KIRQL OldIrql;
    PFN_NUMBER PageFrameIndex;
    ULONG i;
    PSLIST_ENTRY SListEntry;
 
    //
    // Calculate pages needed
    //
    if (GuiStack)
    {
        //
        // We'll allocate 64KB stack, but only commit 12K
        //
        StackPtes = BYTES_TO_PAGES(MmLargeStackSize);
        StackPages = BYTES_TO_PAGES(KERNEL_LARGE_STACK_COMMIT);
    }
    else
    {
        //
        // If the dead stack S-LIST has a stack on it, use it instead of allocating
        // new system PTEs for this stack
        //
        if (ExQueryDepthSList(&MmDeadStackSListHead))
        {
            SListEntry = InterlockedPopEntrySList(&MmDeadStackSListHead);
            if (SListEntry != NULL)
            {
                BaseAddress = (SListEntry + 1);
                return BaseAddress;
            }
        }
 
        //
        // We'll allocate 12K and that's it
        //
        StackPtes = BYTES_TO_PAGES(KERNEL_STACK_SIZE);
        StackPages = StackPtes;
    }
 
    //
    // Reserve stack pages, plus a guard page
    //
    StackPte = MiReserveSystemPtes(StackPtes + 1, SystemPteSpace);
    if (!StackPte) return NULL;
 
    //
    // Get the stack address
    //
    BaseAddress = MiPteToAddress(StackPte + StackPtes + 1);
 
    //
    // Select the right PTE address where we actually start committing pages
    //
    PointerPte = StackPte;
    if (GuiStack) PointerPte += BYTES_TO_PAGES(MmLargeStackSize -
                                               KERNEL_LARGE_STACK_COMMIT);
 
 
    /* Setup the temporary invalid PTE */
    MI_MAKE_SOFTWARE_PTE(&InvalidPte, MM_NOACCESS);
 
    /* Setup the template stack PTE */
    MI_MAKE_HARDWARE_PTE_KERNEL(&TempPte, PointerPte + 1, MM_READWRITE, 0);
 
    //
    // Acquire the PFN DB lock
    //
    OldIrql = MiAcquirePfnLock();
 
    //
    // Loop each stack page
    //
    for (i = 0; i < StackPages; i++)
    {
        //
        // Next PTE
        //
        PointerPte++;
 
        /* Get a page and write the current invalid PTE */
        MI_SET_USAGE(MI_USAGE_KERNEL_STACK);
        MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);
        PageFrameIndex = MiRemoveAnyPage(MI_GET_NEXT_COLOR());
        MI_WRITE_INVALID_PTE(PointerPte, InvalidPte);
 
        /* Initialize the PFN entry for this page */
        MiInitializePfn(PageFrameIndex, PointerPte, 1);
 
        /* Write the valid PTE */
        TempPte.u.Hard.PageFrameNumber = PageFrameIndex;
        MI_WRITE_VALID_PTE(PointerPte, TempPte);
    }
 
    //
    // Release the PFN lock
    //
    MiReleasePfnLock(OldIrql);
 
    //
    // Return the stack address
    //
    return BaseAddress;
}

MmCreatePeb()

NTSTATUS NTAPI MmCreatePeb	(	IN PEPROCESS	Process,
		IN PINITIAL_PEB	InitialPeb,
		OUT PPEB *	BasePeb
	)

Definition at line 518 of file procsup.c.

{
    PPEB Peb = NULL;
    LARGE_INTEGER SectionOffset;
    SIZE_T ViewSize = 0;
    PVOID TableBase = NULL;
    PIMAGE_NT_HEADERS NtHeaders;
    PIMAGE_LOAD_CONFIG_DIRECTORY ImageConfigData;
    NTSTATUS Status;
    USHORT Characteristics;
    SectionOffset.QuadPart = (ULONGLONG)0;
    *BasePeb = NULL;
 
    //
    // Attach to Process
    //
    KeAttachProcess(&Process->Pcb);
 
    //
    // Map NLS Tables
    //
    Status = MmMapViewOfSection(ExpNlsSectionPointer,
                                (PEPROCESS)Process,
                                &TableBase,
                                0,
                                0,
                                &SectionOffset,
                                &ViewSize,
                                ViewShare,
                                MEM_TOP_DOWN,
                                PAGE_READONLY);
    DPRINT("NLS Tables at: %p\n", TableBase);
    if (!NT_SUCCESS(Status))
    {
        /* Cleanup and exit */
        KeDetachProcess();
        return Status;
    }
 
    //
    // Allocate the PEB
    //
    Status = MiCreatePebOrTeb(Process, sizeof(PEB), (PULONG_PTR)&Peb);
    DPRINT("PEB at: %p\n", Peb);
    if (!NT_SUCCESS(Status))
    {
        /* Cleanup and exit */
        KeDetachProcess();
        return Status;
    }
 
    //
    // Use SEH in case we can't load the PEB
    //
    _SEH2_TRY
    {
        //
        // Initialize the PEB
        //
        RtlZeroMemory(Peb, sizeof(PEB));
 
        //
        // Set up data
        //
        Peb->ImageBaseAddress = Process->SectionBaseAddress;
        Peb->InheritedAddressSpace = InitialPeb->InheritedAddressSpace;
        Peb->Mutant = InitialPeb->Mutant;
        Peb->ImageUsesLargePages = InitialPeb->ImageUsesLargePages;
 
        //
        // NLS
        //
        Peb->AnsiCodePageData = (PCHAR)TableBase + ExpAnsiCodePageDataOffset;
        Peb->OemCodePageData = (PCHAR)TableBase + ExpOemCodePageDataOffset;
        Peb->UnicodeCaseTableData = (PCHAR)TableBase + ExpUnicodeCaseTableDataOffset;
 
        //
        // Default Version Data (could get changed below)
        //
        Peb->OSMajorVersion = NtMajorVersion;
        Peb->OSMinorVersion = NtMinorVersion;
        Peb->OSBuildNumber = (USHORT)(NtBuildNumber & 0x3FFF);
        Peb->OSPlatformId = VER_PLATFORM_WIN32_NT;
        Peb->OSCSDVersion = (USHORT)CmNtCSDVersion;
 
        //
        // Heap and Debug Data
        //
        Peb->NumberOfProcessors = KeNumberProcessors;
        Peb->ImageProcessAffinityMask = KeActiveProcessors;
        Peb->BeingDebugged = (BOOLEAN)(Process->DebugPort != NULL);
        Peb->NtGlobalFlag = NtGlobalFlag;
        Peb->HeapSegmentReserve = MmHeapSegmentReserve;
        Peb->HeapSegmentCommit = MmHeapSegmentCommit;
        Peb->HeapDeCommitTotalFreeThreshold = MmHeapDeCommitTotalFreeThreshold;
        Peb->HeapDeCommitFreeBlockThreshold = MmHeapDeCommitFreeBlockThreshold;
        Peb->CriticalSectionTimeout = MmCriticalSectionTimeout;
        Peb->MinimumStackCommit = MmMinimumStackCommitInBytes;
        Peb->MaximumNumberOfHeaps = (PAGE_SIZE - sizeof(PEB)) / sizeof(PVOID);
        Peb->ProcessHeaps = (PVOID*)(Peb + 1);
 
        //
        // Session ID
        //
        if (Process->Session) Peb->SessionId = MmGetSessionId(Process);
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        //
        // Fail
        //
        KeDetachProcess();
        _SEH2_YIELD(return _SEH2_GetExceptionCode());
    }
    _SEH2_END;
 
    //
    // Use SEH in case we can't load the image
    //
    _SEH2_TRY
    {
        //
        // Get NT Headers
        //
        NtHeaders = RtlImageNtHeader(Peb->ImageBaseAddress);
        Characteristics = NtHeaders->FileHeader.Characteristics;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        //
        // Fail
        //
        KeDetachProcess();
        _SEH2_YIELD(return STATUS_INVALID_IMAGE_PROTECT);
    }
    _SEH2_END;
 
    //
    // Parse the headers
    //
    if (NtHeaders)
    {
        //
        // Use SEH in case we can't load the headers
        //
        _SEH2_TRY
        {
            //
            // Get the Image Config Data too
            //
            ImageConfigData = RtlImageDirectoryEntryToData(Peb->ImageBaseAddress,
                                                           TRUE,
                                                           IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG,
                                                           (PULONG)&ViewSize);
            if (ImageConfigData)
            {
                //
                // Probe it
                //
                ProbeForRead(ImageConfigData,
                             sizeof(IMAGE_LOAD_CONFIG_DIRECTORY),
                             sizeof(ULONG));
            }
 
            //
            // Write subsystem data
            //
            Peb->ImageSubsystem = NtHeaders->OptionalHeader.Subsystem;
            Peb->ImageSubsystemMajorVersion = NtHeaders->OptionalHeader.MajorSubsystemVersion;
            Peb->ImageSubsystemMinorVersion = NtHeaders->OptionalHeader.MinorSubsystemVersion;
 
            //
            // Check for version data
            //
            if (NtHeaders->OptionalHeader.Win32VersionValue)
            {
                //
                // Extract values and write them
                //
                Peb->OSMajorVersion = NtHeaders->OptionalHeader.Win32VersionValue & 0xFF;
                Peb->OSMinorVersion = (NtHeaders->OptionalHeader.Win32VersionValue >> 8) & 0xFF;
                Peb->OSBuildNumber = (NtHeaders->OptionalHeader.Win32VersionValue >> 16) & 0x3FFF;
                Peb->OSPlatformId = (NtHeaders->OptionalHeader.Win32VersionValue >> 30) ^ 2;
 
                /* Process CSD version override */
                if ((ImageConfigData) && (ImageConfigData->CSDVersion))
                {
                    /* Take the value from the image configuration directory */
                    Peb->OSCSDVersion = ImageConfigData->CSDVersion;
                }
            }
 
            /* Process optional process affinity mask override */
            if ((ImageConfigData) && (ImageConfigData->ProcessAffinityMask))
            {
                /* Take the value from the image configuration directory */
                Peb->ImageProcessAffinityMask = ImageConfigData->ProcessAffinityMask;
            }
 
            //
            // Check if this is a UP image
            if (Characteristics & IMAGE_FILE_UP_SYSTEM_ONLY)
            {
                //
                // Set single processor rotating affinity.
                // See https://www.microsoftpressstore.com/articles/article.aspx?p=2233328&seqNum=3
                //
                Peb->ImageProcessAffinityMask = AFFINITY_MASK(MmRotatingUniprocessorNumber);
                ASSERT(Peb->ImageProcessAffinityMask & KeActiveProcessors);
                MmRotatingUniprocessorNumber = (MmRotatingUniprocessorNumber + 1) % KeNumberProcessors;
            }
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            //
            // Fail
            //
            KeDetachProcess();
            _SEH2_YIELD(return STATUS_INVALID_IMAGE_PROTECT);
        }
        _SEH2_END;
    }
 
    //
    // Detach from the Process
    //
    KeDetachProcess();
    *BasePeb = Peb;
    return STATUS_SUCCESS;
}

Referenced by PspCreateProcess().

MmCreateProcessAddressSpace()

BOOLEAN NTAPI MmCreateProcessAddressSpace	(	IN ULONG	MinWs,
		IN PEPROCESS	Process,
		OUT PULONG_PTR	DirectoryTableBase
	)

Definition at line 1161 of file procsup.c.

{
    KIRQL OldIrql;
    PFN_NUMBER TableBaseIndex, HyperIndex, WsListIndex;
    ULONG Color;
 
    /* Make sure we don't already have a page directory setup */
    ASSERT(Process->Pcb.DirectoryTableBase[0] == 0);
    ASSERT(Process->Pcb.DirectoryTableBase[1] == 0);
    ASSERT(Process->WorkingSetPage == 0);
 
    /* Choose a process color */
    Process->NextPageColor = (USHORT)RtlRandom(&MmProcessColorSeed);
 
    /* Setup the hyperspace lock */
    KeInitializeSpinLock(&Process->HyperSpaceLock);
 
    /* Lock PFN database */
    OldIrql = MiAcquirePfnLock();
 
    /*
     * Get a page for the table base, one for hyper space & one for the working set list.
     * The PFNs for these pages will be initialized in MmInitializeProcessAddressSpace,
     * when we are already attached to the process.
     * The other pages (if any) are allocated in the arch-specific part.
     */
    Color = MI_GET_NEXT_PROCESS_COLOR(Process);
    MI_SET_USAGE(MI_USAGE_PAGE_DIRECTORY);
    TableBaseIndex = MiRemoveZeroPageSafe(Color);
    if (!TableBaseIndex)
    {
        /* No zero pages, grab a free one */
        TableBaseIndex = MiRemoveAnyPage(Color);
 
        /* Zero it outside the PFN lock */
        MiReleasePfnLock(OldIrql);
        MiZeroPhysicalPage(TableBaseIndex);
        OldIrql = MiAcquirePfnLock();
    }
    MI_SET_USAGE(MI_USAGE_PAGE_DIRECTORY);
    Color = MI_GET_NEXT_PROCESS_COLOR(Process);
    HyperIndex = MiRemoveZeroPageSafe(Color);
    if (!HyperIndex)
    {
        /* No zero pages, grab a free one */
        HyperIndex = MiRemoveAnyPage(Color);
 
        /* Zero it outside the PFN lock */
        MiReleasePfnLock(OldIrql);
        MiZeroPhysicalPage(HyperIndex);
        OldIrql = MiAcquirePfnLock();
    }
    MI_SET_USAGE(MI_USAGE_PAGE_TABLE);
    Color = MI_GET_NEXT_PROCESS_COLOR(Process);
    WsListIndex = MiRemoveZeroPageSafe(Color);
    if (!WsListIndex)
    {
        /* No zero pages, grab a free one */
        WsListIndex = MiRemoveAnyPage(Color);
 
        /* Zero it outside the PFN lock */
        MiReleasePfnLock(OldIrql);
        MiZeroPhysicalPage(WsListIndex);
    }
    else
    {
        /* Release the PFN lock */
        MiReleasePfnLock(OldIrql);
    }
 
    /* Set the base directory pointers */
    Process->WorkingSetPage = WsListIndex;
    DirectoryTableBase[0] = TableBaseIndex << PAGE_SHIFT;
    DirectoryTableBase[1] = HyperIndex << PAGE_SHIFT;
 
    /* Perform the arch-specific parts */
    if (!MiArchCreateProcessAddressSpace(Process, DirectoryTableBase))
    {
        OldIrql = MiAcquirePfnLock();
        MiInsertPageInFreeList(WsListIndex);
        MiInsertPageInFreeList(HyperIndex);
        MiInsertPageInFreeList(TableBaseIndex);
        MiReleasePfnLock(OldIrql);
        Process->WorkingSetPage = 0;
        DirectoryTableBase[0] = 0;
        DirectoryTableBase[1] = 0;
        return FALSE;
    }
 
    /* Switch to phase 1 initialization */
    ASSERT(Process->AddressSpaceInitialized == 0);
    Process->AddressSpaceInitialized = 1;
 
    /* Add the process to the session */
    MiSessionAddProcess(Process);
    return TRUE;
}

MmCreateTeb()

NTSTATUS NTAPI MmCreateTeb	(	IN PEPROCESS	Process,
		IN PCLIENT_ID	ClientId,
		IN PINITIAL_TEB	InitialTeb,
		OUT PTEB *	BaseTeb
	)

Definition at line 753 of file procsup.c.

{
    PTEB Teb;
    NTSTATUS Status = STATUS_SUCCESS;
    *BaseTeb = NULL;
 
    //
    // Attach to Target
    //
    KeAttachProcess(&Process->Pcb);
 
    //
    // Allocate the TEB
    //
    Status = MiCreatePebOrTeb(Process, sizeof(TEB), (PULONG_PTR)&Teb);
    if (!NT_SUCCESS(Status))
    {
        /* Cleanup and exit */
        KeDetachProcess();
        return Status;
    }
 
    //
    // Use SEH in case we can't load the TEB
    //
    _SEH2_TRY
    {
        //
        // Initialize the PEB
        //
        RtlZeroMemory(Teb, sizeof(TEB));
 
        //
        // Set TIB Data
        //
#ifdef _M_AMD64
        Teb->NtTib.ExceptionList = NULL;
#else
        Teb->NtTib.ExceptionList = EXCEPTION_CHAIN_END;
#endif
        Teb->NtTib.Self = (PNT_TIB)Teb;
 
        //
        // Identify this as an OS/2 V3.0 ("Cruiser") TIB
        //
        Teb->NtTib.Version = 30 << 8;
 
        //
        // Set TEB Data
        //
        Teb->ClientId = *ClientId;
        Teb->RealClientId = *ClientId;
        Teb->ProcessEnvironmentBlock = Process->Peb;
        Teb->CurrentLocale = PsDefaultThreadLocaleId;
 
        //
        // Check if we have a grandparent TEB
        //
        if ((InitialTeb->PreviousStackBase == NULL) &&
            (InitialTeb->PreviousStackLimit == NULL))
        {
            //
            // Use initial TEB values
            //
            Teb->NtTib.StackBase = InitialTeb->StackBase;
            Teb->NtTib.StackLimit = InitialTeb->StackLimit;
            Teb->DeallocationStack = InitialTeb->AllocatedStackBase;
        }
        else
        {
            //
            // Use grandparent TEB values
            //
            Teb->NtTib.StackBase = InitialTeb->PreviousStackBase;
            Teb->NtTib.StackLimit = InitialTeb->PreviousStackLimit;
        }
 
        //
        // Initialize the static unicode string
        //
        Teb->StaticUnicodeString.MaximumLength = sizeof(Teb->StaticUnicodeBuffer);
        Teb->StaticUnicodeString.Buffer = Teb->StaticUnicodeBuffer;
    }
    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
    {
        //
        // Get error code
        //
        Status = _SEH2_GetExceptionCode();
    }
    _SEH2_END;
 
    //
    // Return
    //
    KeDetachProcess();
    *BaseTeb = Teb;
    return Status;
}

Referenced by PspCreateThread().

MmDeleteKernelStack()

VOID NTAPI MmDeleteKernelStack	(	IN PVOID	StackBase,
		IN BOOLEAN	GuiStack
	)

Definition at line 187 of file procsup.c.

{
    PMMPTE PointerPte;
    PFN_NUMBER PageFrameNumber, PageTableFrameNumber;
    PFN_COUNT StackPages;
    PMMPFN Pfn1, Pfn2;
    ULONG i;
    KIRQL OldIrql;
    PSLIST_ENTRY SListEntry;
 
    //
    // This should be the guard page, so decrement by one
    //
    PointerPte = MiAddressToPte(StackBase);
    PointerPte--;
 
    //
    // If this is a small stack, just push the stack onto the dead stack S-LIST
    //
    if (!GuiStack)
    {
        if (ExQueryDepthSList(&MmDeadStackSListHead) < MmMaximumDeadKernelStacks)
        {
            SListEntry = ((PSLIST_ENTRY)StackBase) - 1;
            InterlockedPushEntrySList(&MmDeadStackSListHead, SListEntry);
            return;
        }
    }
 
    //
    // Calculate pages used
    //
    StackPages = BYTES_TO_PAGES(GuiStack ?
                                MmLargeStackSize : KERNEL_STACK_SIZE);
 
    /* Acquire the PFN lock */
    OldIrql = MiAcquirePfnLock();
 
    //
    // Loop them
    //
    for (i = 0; i < StackPages; i++)
    {
        //
        // Check if this is a valid PTE
        //
        if (PointerPte->u.Hard.Valid == 1)
        {
            /* Get the PTE's page */
            PageFrameNumber = PFN_FROM_PTE(PointerPte);
            Pfn1 = MiGetPfnEntry(PageFrameNumber);
 
            /* Now get the page of the page table mapping it */
            PageTableFrameNumber = Pfn1->u4.PteFrame;
            Pfn2 = MiGetPfnEntry(PageTableFrameNumber);
 
            /* Remove a shared reference, since the page is going away */
            MiDecrementShareCount(Pfn2, PageTableFrameNumber);
 
            /* Set the special pending delete marker */
            MI_SET_PFN_DELETED(Pfn1);
 
            /* And now delete the actual stack page */
            MiDecrementShareCount(Pfn1, PageFrameNumber);
        }
 
        //
        // Next one
        //
        PointerPte--;
    }
 
    //
    // We should be at the guard page now
    //
    ASSERT(PointerPte->u.Hard.Valid == 0);
 
    /* Release the PFN lock */
    MiReleasePfnLock(OldIrql);
 
    //
    // Release the PTEs
    //
    MiReleaseSystemPtes(PointerPte, StackPages + 1, SystemPteSpace);
}

MmDeleteProcessAddressSpace()

VOID NTAPI MmDeleteProcessAddressSpace

(

IN PEPROCESS

Process

)

Definition at line 1362 of file procsup.c.

{
    PMMPFN Pfn1, Pfn2;
    KIRQL OldIrql;
    PFN_NUMBER PageFrameIndex;
 
#ifndef _M_AMD64
    OldIrql = MiAcquireExpansionLock();
    RemoveEntryList(&Process->MmProcessLinks);
    MiReleaseExpansionLock(OldIrql);
#endif
 
    //ASSERT(Process->CommitCharge == 0);
 
    /* Remove us from the list */
    OldIrql = MiAcquireExpansionLock();
    if (Process->Vm.WorkingSetExpansionLinks.Flink != NULL)
        RemoveEntryList(&Process->Vm.WorkingSetExpansionLinks);
    MiReleaseExpansionLock(OldIrql);
 
    /* Acquire the PFN lock */
    OldIrql = MiAcquirePfnLock();
 
    /* Check for fully initialized process */
    if (Process->AddressSpaceInitialized == 2)
    {
        /* Map the working set page and its page table */
        Pfn1 = MiGetPfnEntry(Process->WorkingSetPage);
        Pfn2 = MiGetPfnEntry(Pfn1->u4.PteFrame);
 
        /* Nuke it */
        MI_SET_PFN_DELETED(Pfn1);
        MiDecrementShareCount(Pfn2, Pfn1->u4.PteFrame);
        MiDecrementShareCount(Pfn1, Process->WorkingSetPage);
        ASSERT((Pfn1->u3.e2.ReferenceCount == 0) || (Pfn1->u3.e1.WriteInProgress));
 
        /* Now map hyperspace and its page table */
        PageFrameIndex = Process->Pcb.DirectoryTableBase[1] >> PAGE_SHIFT;
        Pfn1 = MiGetPfnEntry(PageFrameIndex);
        Pfn2 = MiGetPfnEntry(Pfn1->u4.PteFrame);
 
        /* Nuke it */
        MI_SET_PFN_DELETED(Pfn1);
        MiDecrementShareCount(Pfn2, Pfn1->u4.PteFrame);
        MiDecrementShareCount(Pfn1, PageFrameIndex);
        ASSERT((Pfn1->u3.e2.ReferenceCount == 0) || (Pfn1->u3.e1.WriteInProgress));
 
        /* Finally, nuke the PDE itself */
        PageFrameIndex = Process->Pcb.DirectoryTableBase[0] >> PAGE_SHIFT;
        Pfn1 = MiGetPfnEntry(PageFrameIndex);
        MI_SET_PFN_DELETED(Pfn1);
        MiDecrementShareCount(Pfn1, PageFrameIndex);
        MiDecrementShareCount(Pfn1, PageFrameIndex);
 
        /* Page table is now dead. Bye bye... */
        ASSERT((Pfn1->u3.e2.ReferenceCount == 0) || (Pfn1->u3.e1.WriteInProgress));
    }
    else
    {
        DPRINT1("Deleting partially initialized address space of Process %p. Might leak resources.\n",
                Process);
    }
 
    /* Release the PFN lock */
    MiReleasePfnLock(OldIrql);
 
    /* Drop a reference on the session */
    if (Process->Session) MiReleaseProcessReferenceToSessionDataPage(Process->Session);
 
    /* Clear out the PDE pages */
    Process->Pcb.DirectoryTableBase[0] = 0;
    Process->Pcb.DirectoryTableBase[1] = 0;
}

Referenced by PspDeleteProcess().

MmDeleteTeb()

VOID NTAPI MmDeleteTeb	(	IN PEPROCESS	Process,
		IN PTEB	Teb
	)

Definition at line 122 of file procsup.c.

{
    ULONG_PTR TebEnd;
    PETHREAD Thread = PsGetCurrentThread();
    PMMVAD Vad;
    PMM_AVL_TABLE VadTree = &Process->VadRoot;
    DPRINT("Deleting TEB: %p in %16s\n", Teb, Process->ImageFileName);
 
    /* TEB is one page */
    TebEnd = (ULONG_PTR)Teb + ROUND_TO_PAGES(sizeof(TEB)) - 1;
 
    /* Attach to the process */
    KeAttachProcess(&Process->Pcb);
 
    /* Lock the process address space */
    KeAcquireGuardedMutex(&Process->AddressCreationLock);
 
    /* Find the VAD, make sure it's a TEB VAD */
    Vad = MiLocateAddress(Teb);
    DPRINT("Removing node for VAD: %lx %lx\n", Vad->StartingVpn, Vad->EndingVpn);
    ASSERT(Vad != NULL);
    if (Vad->StartingVpn != ((ULONG_PTR)Teb >> PAGE_SHIFT))
    {
        /* Bug in the AVL code? */
        DPRINT1("Corrupted VAD!\n");
    }
    else
    {
        /* Sanity checks for a valid TEB VAD */
        ASSERT((Vad->StartingVpn == ((ULONG_PTR)Teb >> PAGE_SHIFT) &&
               (Vad->EndingVpn == (TebEnd >> PAGE_SHIFT))));
        ASSERT(Vad->u.VadFlags.NoChange == TRUE);
        ASSERT(Vad->u2.VadFlags2.OneSecured == TRUE);
        ASSERT(Vad->u2.VadFlags2.MultipleSecured == FALSE);
 
        /* Lock the working set */
        MiLockProcessWorkingSetUnsafe(Process, Thread);
 
        /* Remove this VAD from the tree */
        ASSERT(VadTree->NumberGenericTableElements >= 1);
        MiRemoveNode((PMMADDRESS_NODE)Vad, VadTree);
 
        /* Delete the pages */
        MiDeleteVirtualAddresses((ULONG_PTR)Teb, TebEnd, NULL);
 
        /* Release the working set */
        MiUnlockProcessWorkingSetUnsafe(Process, Thread);
 
        /* Remove the VAD */
        ExFreePool(Vad);
 
        /* Return the quota the VAD used */
        PsReturnProcessNonPagedPoolQuota(Process, sizeof(MMVAD_LONG));
    }
 
    /* Release the address space lock */
    KeReleaseGuardedMutex(&Process->AddressCreationLock);
 
    /* Detach */
    KeDetachProcess();
}

MmGrowKernelStack()

NTSTATUS NTAPI MmGrowKernelStack

(

IN PVOID

StackPointer

)

Definition at line 477 of file procsup.c.

{
    //
    // Call the extended version
    //
    return MmGrowKernelStackEx(StackPointer, KERNEL_LARGE_STACK_COMMIT);
}

Referenced by KiUserModeCallout().

MmGrowKernelStackEx()

NTSTATUS NTAPI MmGrowKernelStackEx	(	IN PVOID	StackPointer,
		IN ULONG	GrowSize
	)

Definition at line 389 of file procsup.c.

{
    PKTHREAD Thread = KeGetCurrentThread();
    PMMPTE LimitPte, NewLimitPte, LastPte;
    KIRQL OldIrql;
    MMPTE TempPte, InvalidPte;
    PFN_NUMBER PageFrameIndex;
 
    //
    // Make sure the stack did not overflow
    //
    ASSERT(((ULONG_PTR)Thread->StackBase - (ULONG_PTR)Thread->StackLimit) <=
           (MmLargeStackSize + PAGE_SIZE));
 
    //
    // Get the current stack limit
    //
    LimitPte = MiAddressToPte(Thread->StackLimit);
    ASSERT(LimitPte->u.Hard.Valid == 1);
 
    //
    // Get the new one and make sure this isn't a retarded request
    //
    NewLimitPte = MiAddressToPte((PVOID)((ULONG_PTR)StackPointer - GrowSize));
    if (NewLimitPte == LimitPte) return STATUS_SUCCESS;
 
    //
    // Now make sure you're not going past the reserved space
    //
    LastPte = MiAddressToPte((PVOID)((ULONG_PTR)Thread->StackBase -
                                     MmLargeStackSize));
    if (NewLimitPte < LastPte)
    {
        //
        // Sorry!
        //
        return STATUS_STACK_OVERFLOW;
    }
 
    //
    // Calculate the number of new pages
    //
    LimitPte--;
 
    /* Setup the temporary invalid PTE */
    MI_MAKE_SOFTWARE_PTE(&InvalidPte, MM_NOACCESS);
 
    //
    // Acquire the PFN DB lock
    //
    OldIrql = MiAcquirePfnLock();
 
    //
    // Loop each stack page
    //
    while (LimitPte >= NewLimitPte)
    {
        /* Get a page and write the current invalid PTE */
        MI_SET_USAGE(MI_USAGE_KERNEL_STACK_EXPANSION);
        MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);
        PageFrameIndex = MiRemoveAnyPage(MI_GET_NEXT_COLOR());
        MI_WRITE_INVALID_PTE(LimitPte, InvalidPte);
 
        /* Initialize the PFN entry for this page */
        MiInitializePfn(PageFrameIndex, LimitPte, 1);
 
        /* Setup the template stack PTE */
        MI_MAKE_HARDWARE_PTE_KERNEL(&TempPte, LimitPte, MM_READWRITE, PageFrameIndex);
 
        /* Write the valid PTE */
        MI_WRITE_VALID_PTE(LimitPte--, TempPte);
    }
 
    //
    // Release the PFN lock
    //
    MiReleasePfnLock(OldIrql);
 
    //
    // Set the new limit
    //
    Thread->StackLimit = (ULONG_PTR)MiPteToAddress(NewLimitPte);
    return STATUS_SUCCESS;
}

Referenced by MmGrowKernelStack().

MmInitializeHandBuiltProcess()

NTSTATUS NTAPI MmInitializeHandBuiltProcess	(	IN PEPROCESS	Process,
		IN PULONG_PTR	DirectoryTableBase
	)

Definition at line 1127 of file procsup.c.

{
    /* Share the directory base with the idle process */
    DirectoryTableBase[0] = PsGetCurrentProcess()->Pcb.DirectoryTableBase[0];
    DirectoryTableBase[1] = PsGetCurrentProcess()->Pcb.DirectoryTableBase[1];
 
    /* Initialize the Addresss Space */
    KeInitializeGuardedMutex(&Process->AddressCreationLock);
    KeInitializeSpinLock(&Process->HyperSpaceLock);
    Process->Vm.WorkingSetExpansionLinks.Flink = NULL;
    ASSERT(Process->VadRoot.NumberGenericTableElements == 0);
    Process->VadRoot.BalancedRoot.u1.Parent = &Process->VadRoot.BalancedRoot;
 
    /* Use idle process Working set */
    Process->Vm.VmWorkingSetList = PsGetCurrentProcess()->Vm.VmWorkingSetList;
    Process->WorkingSetPage = PsGetCurrentProcess()->WorkingSetPage;
 
    /* Done */
    Process->HasAddressSpace = TRUE;//??
    return STATUS_SUCCESS;
}

Referenced by PspCreateProcess().

MmInitializeHandBuiltProcess2()

NTSTATUS NTAPI MmInitializeHandBuiltProcess2

(

IN PEPROCESS

Process

)

Definition at line 1153 of file procsup.c.

{
    /* Lock the VAD, ARM3-owned ranges away */
    return STATUS_SUCCESS;
}

Referenced by PspCreateProcess().

MmInitializeProcessAddressSpace()

NTSTATUS NTAPI MmInitializeProcessAddressSpace	(	IN PEPROCESS	Process,
		IN PEPROCESS ProcessClone	OPTIONAL,
		IN PVOID Section	OPTIONAL,
		IN OUT PULONG	Flags,
		IN POBJECT_NAME_INFORMATION *AuditName	OPTIONAL
	)

Definition at line 932 of file procsup.c.

{
    NTSTATUS Status = STATUS_SUCCESS;
    SIZE_T ViewSize = 0;
    PVOID ImageBase = 0;
    PMMPTE PointerPte;
    KIRQL OldIrql;
    PMMPDE PointerPde;
    PMMPFN Pfn;
    PFN_NUMBER PageFrameNumber;
    UNICODE_STRING FileName;
    PWCHAR Source;
    PCHAR Destination;
    USHORT Length = 0;
 
#if (_MI_PAGING_LEVELS >= 3)
    PMMPPE PointerPpe;
#endif
#if (_MI_PAGING_LEVELS == 4)
    PMMPXE PointerPxe;
#endif
 
    /* We should have a PDE */
    ASSERT(Process->Pcb.DirectoryTableBase[0] != 0);
    ASSERT(Process->PdeUpdateNeeded == FALSE);
 
    /* Attach to the process */
    KeAttachProcess(&Process->Pcb);
 
    /* The address space should now been in phase 1 or 0 */
    ASSERT(Process->AddressSpaceInitialized <= 1);
    Process->AddressSpaceInitialized = 2;
 
    /* Initialize the Addresss Space lock */
    KeInitializeGuardedMutex(&Process->AddressCreationLock);
    Process->Vm.WorkingSetExpansionLinks.Flink = NULL;
 
    /* Initialize AVL tree */
    ASSERT(Process->VadRoot.NumberGenericTableElements == 0);
    Process->VadRoot.BalancedRoot.u1.Parent = &Process->VadRoot.BalancedRoot;
 
    /* Lock our working set */
    MiLockProcessWorkingSet(Process, PsGetCurrentThread());
 
    /* Lock PFN database */
    OldIrql = MiAcquirePfnLock();
 
    /* Setup the PFN for the PDE base of this process */
#if (_MI_PAGING_LEVELS == 4)
    PointerPte = MiAddressToPte(PXE_BASE);
#elif (_MI_PAGING_LEVELS == 3)
    PointerPte = MiAddressToPte(PPE_BASE);
#else
    PointerPte = MiAddressToPte(PDE_BASE);
#endif
    PageFrameNumber = PFN_FROM_PTE(PointerPte);
    ASSERT(Process->Pcb.DirectoryTableBase[0] == PageFrameNumber * PAGE_SIZE);
    MiInitializePfn(PageFrameNumber, PointerPte, TRUE);
 
    /* Do the same for hyperspace */
    PointerPde = MiAddressToPde(HYPER_SPACE);
    PageFrameNumber = PFN_FROM_PTE(PointerPde);
    MiInitializePfn(PageFrameNumber, (PMMPTE)PointerPde, TRUE);
#if (_MI_PAGING_LEVELS == 2)
    ASSERT(Process->Pcb.DirectoryTableBase[1] == PageFrameNumber * PAGE_SIZE);
#endif
 
#if (_MI_PAGING_LEVELS >= 3)
    PointerPpe = MiAddressToPpe((PVOID)HYPER_SPACE);
    PageFrameNumber = PFN_FROM_PTE(PointerPpe);
    MiInitializePfn(PageFrameNumber, PointerPpe, TRUE);
#if (_MI_PAGING_LEVELS == 3)
    ASSERT(Process->Pcb.DirectoryTableBase[1] == PageFrameNumber * PAGE_SIZE);
#endif
#endif
#if (_MI_PAGING_LEVELS == 4)
    PointerPxe = MiAddressToPxe((PVOID)HYPER_SPACE);
    PageFrameNumber = PFN_FROM_PTE(PointerPxe);
    MiInitializePfn(PageFrameNumber, PointerPxe, TRUE);
    ASSERT(Process->Pcb.DirectoryTableBase[1] == PageFrameNumber * PAGE_SIZE);
#endif
 
    /* Do the same for the Working set list */
    PointerPte = MiAddressToPte(MmWorkingSetList);
    PageFrameNumber = PFN_FROM_PTE(PointerPte);
    MiInitializePfn(PageFrameNumber, PointerPte, TRUE);
 
    /* All our pages are now active & valid. Release the lock. */
    MiReleasePfnLock(OldIrql);
 
    /* This should be in hyper space, but not in the mapping range */
    Process->Vm.VmWorkingSetList = MmWorkingSetList;
    ASSERT(((ULONG_PTR)MmWorkingSetList >= MI_MAPPING_RANGE_END) && ((ULONG_PTR)MmWorkingSetList <= HYPER_SPACE_END));
 
    /* Now initialize the working set list */
    MiInitializeWorkingSetList(&Process->Vm);
 
    /* The rule is that the owner process is always in the FLINK of the PDE's PFN entry */
    Pfn = MiGetPfnEntry(Process->Pcb.DirectoryTableBase[0] >> PAGE_SHIFT);
    ASSERT(Pfn->u4.PteFrame == MiGetPfnEntryIndex(Pfn));
    ASSERT(Pfn->u1.WsIndex == 0);
    Pfn->u1.Event = (PKEVENT)Process;
 
    /* Sanity check */
    ASSERT(Process->PhysicalVadRoot == NULL);
 
    /* Release the process working set */
    MiUnlockProcessWorkingSet(Process, PsGetCurrentThread());
 
#ifdef _M_AMD64
    /* On x64 we need a VAD for the shared user page */
    Status = MiInsertSharedUserPageVad(Process);
    if (!NT_SUCCESS(Status))
    {
        DPRINT1("MiCreateSharedUserPageVad() failed: 0x%lx\n", Status);
        return Status;
    }
#endif
 
    /* Check if there's a Section Object */
    if (Section)
    {
        /* Determine the image file name and save it to EPROCESS */
        PFILE_OBJECT FileObject = MmGetFileObjectForSection(Section);
        FileName = FileObject->FileName;
        Source = (PWCHAR)((PCHAR)FileName.Buffer + FileName.Length);
        if (FileName.Buffer)
        {
            /* Loop the file name*/
            while (Source > FileName.Buffer)
            {
                /* Make sure this isn't a backslash */
                if (*--Source == OBJ_NAME_PATH_SEPARATOR)
                {
                    /* If so, stop it here */
                    Source++;
                    break;
                }
                else
                {
                    /* Otherwise, keep going */
                    Length++;
                }
            }
        }
 
        /* Copy the to the process and truncate it to 15 characters if necessary */
        Destination = Process->ImageFileName;
        Length = min(Length, sizeof(Process->ImageFileName) - 1);
        while (Length--) *Destination++ = (UCHAR)*Source++;
        *Destination = ANSI_NULL;
 
        /* Check if caller wants an audit name */
        if (AuditName)
        {
            /* Setup the audit name */
            Status = SeInitializeProcessAuditName(FileObject, FALSE, AuditName);
            if (!NT_SUCCESS(Status))
            {
                /* Fail */
                KeDetachProcess();
                return Status;
            }
        }
 
        /* Map the section */
        Status = MmMapViewOfSection(Section,
                                    Process,
                                    (PVOID*)&ImageBase,
                                    0,
                                    0,
                                    NULL,
                                    &ViewSize,
                                    ViewUnmap,
                                    MEM_COMMIT,
                                    PAGE_READWRITE);
 
        /* Save the pointer */
        Process->SectionBaseAddress = ImageBase;
    }
 
    /* Be nice and detach */
    KeDetachProcess();
 
    /* Return status to caller */
    return Status;
}

MmSetMemoryPriorityProcess()

NTSTATUS NTAPI MmSetMemoryPriorityProcess	(	IN PEPROCESS	Process,
		IN UCHAR	MemoryPriority
	)

Definition at line 487 of file procsup.c.

{
    UCHAR OldPriority;
 
    //
    // Check if we have less then 16MB of Physical Memory
    //
    if ((MmSystemSize == MmSmallSystem) &&
        (MmNumberOfPhysicalPages < ((15 * 1024 * 1024) / PAGE_SIZE)))
    {
        //
        // Always use background priority
        //
        MemoryPriority = MEMORY_PRIORITY_BACKGROUND;
    }
 
    //
    // Save the old priority and update it
    //
    OldPriority = (UCHAR)Process->Vm.Flags.MemoryPriority;
    Process->Vm.Flags.MemoryPriority = MemoryPriority;
 
    //
    // Return the old priority
    //
    return OldPriority;
}

Referenced by NtSetInformationProcess(), and PspComputeQuantumAndPriority().

NtAllocateUserPhysicalPages()

NTSTATUS NTAPI NtAllocateUserPhysicalPages	(	IN HANDLE	ProcessHandle,
		IN OUT PULONG_PTR	NumberOfPages,
		IN OUT PULONG_PTR	UserPfnArray
	)

Definition at line 1441 of file procsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by AllocateUserPhysicalPages().

NtFreeUserPhysicalPages()

NTSTATUS NTAPI NtFreeUserPhysicalPages	(	IN HANDLE	ProcessHandle,
		IN OUT PULONG_PTR	NumberOfPages,
		IN OUT PULONG_PTR	UserPfnArray
	)

Definition at line 1471 of file procsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by FreeUserPhysicalPages().

NtMapUserPhysicalPages()

NTSTATUS NTAPI NtMapUserPhysicalPages	(	IN PVOID	VirtualAddresses,
		IN ULONG_PTR	NumberOfPages,
		IN OUT PULONG_PTR	UserPfnArray
	)

Definition at line 1451 of file procsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by MapUserPhysicalPages().

NtMapUserPhysicalPagesScatter()

NTSTATUS NTAPI NtMapUserPhysicalPagesScatter	(	IN PVOID *	VirtualAddresses,
		IN ULONG_PTR	NumberOfPages,
		IN OUT PULONG_PTR	UserPfnArray
	)

Definition at line 1461 of file procsup.c.

{
    UNIMPLEMENTED;
    return STATUS_NOT_IMPLEMENTED;
}

Referenced by MapUserPhysicalPagesScatter().

Variable Documentation

MmDeadStackSListHead

SLIST_HEADER MmDeadStackSListHead

Definition at line 22 of file procsup.c.

Referenced by MmArmInitSystem(), MmCreateKernelStack(), and MmDeleteKernelStack().

MmMaximumDeadKernelStacks

ULONG MmMaximumDeadKernelStacks = 5

Definition at line 21 of file procsup.c.

Referenced by MmArmInitSystem(), and MmDeleteKernelStack().

MmProcessColorSeed

ULONG MmProcessColorSeed = 0x12345678

Definition at line 20 of file procsup.c.

Referenced by MmCreateProcessAddressSpace().

MmRotatingUniprocessorNumber

ULONG MmRotatingUniprocessorNumber = 0

Definition at line 23 of file procsup.c.

Referenced by MmCreatePeb().